Ran Yan examines the body and discovers the cause of death is a needle in his skull. Xiao Song investigates the victim's hotel room and finds the room is similar to Ning Xiang's room, but Ning Xiang is already dead from one year ago. Ran Yan investigates Ning Xiang's death, hoping to get money. Xiao Song goes to look at the body and discovers Ran Yan already there. Another person dies from a needle in the skull. (Source: jindreame at MyDramaList)